Q: We are 4 people with 4 luggage (23kg each) and 3 carry-on bags, would we fit the taxis on a Friday night (flight arrive at 19:00), and how long and how much would it cost?
A: The majority of Barcelona Taxis are only licenced to carry a maximum of 4 passengers. There are however a small percentage of taxis (around 10%) that also have a special licence to carry up to 6 passengers. Which you require depends on the size of your bags and the size of the taxi you take as to if you will all fit in one taxi. The airport is also serviced by van taxis which also take 4 passenger and also a small percentage that also have a license for 6 passengers but you will also have more room for your luggage. You can make a request to one of the attendants to wait for a van taxi.
There are always taxi attendants at each taxi rank who can help you. You may have to wait a little longer for a van taxi.
Your hotel is in the city centre so the transit from the airport is about 25 to 30 minutes depending on traffic.
For more information on the Barcelona taxi service from BCN airport follow this link: BCN Airport taxis